/*
 * Copyright 2001-2005 (C) MetaStuff, Ltd. All Rights Reserved.
 *
 * This software is open source.
 * See the bottom of this file for the licence.
 */

package org.dom4j.dom;

import org.w3c.dom.Attr;
import org.w3c.dom.DOMException;
import org.w3c.dom.Node;

/**
 * <p> <code>DOMAttributeNodeMap</code> implements a W3C NameNodeMap for the
 * attributes of an element. </p>
 * 
 * @author <a href="mailto:james.strachan@metastuff.com">James Strachan </a>
 * @version $Revision: 1.2 $
 */
public class DOMAttributeNodeMap implements org.w3c.dom.NamedNodeMap
{
   private DOMElement element;

   public DOMAttributeNodeMap(DOMElement element)
   {
      this.element = element;
   }

   // org.w3c.dom.NamedNodeMap interface
   // -------------------------------------------------------------------------
   public void foo() throws DOMException
   {
      DOMNodeHelper.notSupported();
   }

   public Node getNamedItem(String name)
   {
      return element.getAttributeNode(name);
   }

   public Node setNamedItem(Node arg) throws DOMException
   {
      if(arg instanceof Attr)
      {
         return element.setAttributeNode((org.w3c.dom.Attr) arg);
      }
      else
      {
         throw new DOMException(DOMException.NOT_SUPPORTED_ERR,
            "Node is not an Attr: " + arg);
      }
   }

   public Node removeNamedItem(String name) throws DOMException
   {
      org.w3c.dom.Attr attr = element.getAttributeNode(name);

      if(attr == null)
      {
         throw new DOMException(DOMException.NOT_FOUND_ERR,
            "No attribute named " + name);
      }

      return element.removeAttributeNode(attr);
   }

   public Node item(int index)
   {
      return DOMNodeHelper.asDOMAttr(element.attribute(index));
   }

   public int getLength()
   {
      return element.attributeCount();
   }

   public Node getNamedItemNS(String namespaceURI, String localName)
   {
      return element.getAttributeNodeNS(namespaceURI, localName);
   }

   public Node setNamedItemNS(Node arg) throws DOMException
   {
      if(arg instanceof Attr)
      {
         return element.setAttributeNodeNS((org.w3c.dom.Attr) arg);
      }
      else
      {
         throw new DOMException(DOMException.NOT_SUPPORTED_ERR,
            "Node is not an Attr: " + arg);
      }
   }

   public Node removeNamedItemNS(String namespaceURI, String localName)
      throws DOMException
   {
      org.w3c.dom.Attr attr =
         element.getAttributeNodeNS(namespaceURI, localName);

      if(attr != null)
      {
         return element.removeAttributeNode(attr);
      }

      return attr;
   }
}

/*
 * Redistribution and use of this software and associated documentation
 * ("Software"), with or without modification, are permitted provided that the
 * following conditions are met:
 * 
 * 1. Redistributions of source code must retain copyright statements and
 * notices. Redistributions must also contain a copy of this document.
 * 
 * 2. Redistributions in binary form must reproduce the above copyright notice,
 * this list of conditions and the following disclaimer in the documentation
 * and/or other materials provided with the distribution.
 * 
 * 3. The name "DOM4J" must not be used to endorse or promote products derived
 * from this Software without prior written permission of MetaStuff, Ltd. For
 * written permission, please contact dom4j-info@metastuff.com.
 * 
 * 4. Products derived from this Software may not be called "DOM4J" nor may
 * "DOM4J" appear in their names without prior written permission of MetaStuff,
 * Ltd. DOM4J is a registered trademark of MetaStuff, Ltd.
 * 
 * 5. Due credit should be given to the DOM4J Project - http://www.dom4j.org
 * 
 * THIS SOFTWARE IS PROVIDED BY METASTUFF, LTD. AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL METASTUFF, LTD. OR ITS CONTRIBUTORS BE
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 * 
 * Copyright 2001-2005 (C) MetaStuff, Ltd. All Rights Reserved.
 */
